vue 點擊切換圖標

<div @click="showImg" class="showSearch">
  <img  class="header_img"    v-if="!showSearch"  src="~@/assets/images/board/btn-select-black.png"/>
  <img  class="header_img"    v-if="showSearch" src="~@/assets/images/board/btn-select-blue.png"/>
</div>

showSearch:false,

showImg () {
  this.showSearch = ! this.showSearch;
},